Flex :: Setting VerticalScrollPosition Not Working
Jan 7, 2010
I have a VBox that I am populating programatically, After a particular event (dragDrop) I do some calculations, reorder some variables, then re-build the VBox. This all works great, but I want the VBox to scroll back to the correct verticalScrollPosition. I tried even the simplest thing: myVBox.verticalScrollPosition = 200But I just can't get it to set the scroll position after it's rebuilt.
Edit: per Franky's response I realized that my dragDrop function was calling the rebuilder function then the position setter function back to back, which means it wasn't done being built when it was trying to set. Now I'm passing the position I want the box set to to the rebuilder function which sets the scroll position at the end of building the VBox and everything works out great.
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Mar 17, 2011
I have a weird problem with verticalScrollPosition in Flex.I have a content Canvas and a wrapper Canvas. The content is large (5000px X 5000px), the wrapper is 800px X 800px.
public var wrapper:Canvas = new Canvas();
public var content:Canvas = new Canvas();
wrapper.addChild(content);
application.addChild(wrapper);
I would like to set the wrapper's scrollbar position dynamically anytime. I can do it by calling its properties:
wrapper.verticalScrollPosition = A;
wrapper.horizontalScrollPosition = B;
This is working fine. But! If I set a default scrollbar position when the Canvas is complete:
wrapper.addEventListener(FlexEvent.CREATION_COMPLETE, function(e:FlexEvent):void{
wrapper.verticalScrollPosition = DEFAULT_A;
wrapper.horizontalScrollPosition = DEFAULT_B;
});
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wrapper.verticalScrollPosition = C;
trace(wrapper.verticalScrollPosition); // Outputs: DEFAULT_A
So the problem only exist if I set a default position using 'FlexEvent.CREATION_COMPLETE'.
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